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Electron-lattice in...
Electron-lattice interactions in the perovskite LaFe0.5Cr0.5O3 characterized by optical spectroscopy and LDA plus U calculations
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- Andreasson, Jakob, 1975 (author)
- Uppsala universitet,Institutionen för cell- och molekylärbiologi,Chalmers tekniska högskola,Chalmers University of Technology
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- Holmlund, Joakim, 1968 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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Singer, Stefan G. (author)
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- Knee, Christopher, 1973 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi,Department of Chemistry
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- Rauer, Ralf, 1974 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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Schulz, Benjamin (author)
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- Käll, Mikael, 1963 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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Ruebhausen, Michael (author)
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- Eriksson, Sten, 1958 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Börjesson, Lars, 1957 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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Lichtenstein, Alexander (author)
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(creator_code:org_t)
- 2009
- 2009
- English.
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In: Physical Review B. Condensed Matter and Materials Physics. - 1098-0121 .- 1550-235X .- 2469-9950 .- 2469-9969. ; 80:7, s. 075103-
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Abstract
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- We use resonance Raman scattering (incident photon energies between 1.8 and 4.13 eV), LDA+U calculations, spectroscopic ellipsometry, and oblique IR reflectivity to characterize the strong electron-phonon interactions in the disordered perovskite LaFe0.5Cr0.5O3. When the photon energy coincides with a Cr to Fe Mott-Hubbard transfer gap around 2.4 eV the electron-phonon interaction is manifested by a Franck-Condon effect with exceptional first-and higher order scattering of a local oxygen breathing mode. At higher incident energies we observe a superposition of Franck-Condon scattering and Frohlich interaction induced infrared active longitudinal optical two-phonon scattering activated mainly by O to Fe charge transfer. Our results establish LaFe0.5Cr0.5O3 as a model compound for research on electron-phonon interactions in strongly correlated complex systems and show that Franck-Condon scattering in complex solids is not limited to Jahn-Teller active compounds.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Keyword
- Physics
- Fysik
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Andreasson, Jako ...
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Holmlund, Joakim ...
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Singer, Stefan G ...
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Knee, Christophe ...
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Rauer, Ralf, 197 ...
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Schulz, Benjamin
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show more...
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Käll, Mikael, 19 ...
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Ruebhausen, Mich ...
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Eriksson, Sten, ...
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Börjesson, Lars, ...
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Lichtenstein, Al ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
- Articles in the publication
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Physical Review ...
- By the university
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Uppsala University
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Chalmers University of Technology
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University of Gothenburg